Thiart, H., Lehr, D., Ebert, D. D., Sieland, B., Berking, M., & Riper, H. (2013). Log in and breathe out: Efficacy and cost-effectiveness of an online sleep training for teachers affected by work-related strain - study protocol for a randomized controlled trial. BioMed Central.

Thiart, Hanne, Dirk Lehr, David Daniel Ebert, Bernhard Sieland, Matthias Berking, ja Heleen Riper. Log in and Breathe Out: Efficacy and Cost-effectiveness of an Online Sleep Training for Teachers Affected By Work-related Strain - Study Protocol for a Randomized Controlled Trial. BioMed Central, 2013.

Thiart, Hanne, et al. Log in and Breathe Out: Efficacy and Cost-effectiveness of an Online Sleep Training for Teachers Affected By Work-related Strain - Study Protocol for a Randomized Controlled Trial. BioMed Central, 2013.